Your shopping cart is empty!

Mona-Guard Block

Mona-Guard Block
Mona-Guard Block Mona-Guard Block
Block Paving Sealer
Availability: In Stock
Ex Tax: £28.00

Available Options

* Size:


Mona-Guard Block is a unique, water based resin, liquid surface and sand joint sealer. Mona-Guard Block has special properties, which allow it to bond sand in the joint whist still maintaining a degree of flexibility. When applied to the surface of concrete / clay pavement materials, Mona-Guard Block also functions as a surface sealer that provides and easy clean surface with protection against water and forms of staining agents such as oil etc.

For use externally on concrete / clay pavement materials used for town centres, footpaths, driveways, patio’s, garage forecourts, etc :

  • Clay block paving
  • Concrete Block paving
  • Concrete Flagstones
  • Concrete / clay roof tiles
  • Natural Stone paving flagstone
  • Natural stone paving
  • Concrete floors
  • Water repellence
  • Resistance to oil penetration
  • Stain Resistance
  • Resistant to Dirt and Pollution
  • Resistant to Weathering & delays aging
  • Prevents moss and algea forming
  • Permeable to Water Vapour (breathable)
  • Maintains freeze thaw charateristics
  • UV, Chemical & abrasion resistant
  • Reduces Efflorescence
  • Inhibits weed growth through sand joints
  • Clear finish obtained
  • Solvent free
  • Envirnomentally friendly

Technical Support

Monaseal provides a technical advisory service for on-site assistance and advice on product selection, evaluation trials and application equipment.

Product Information:

Colour Range Clear
Preparation Ensure surface to be treated is clean, not contaminated and dry.
Application Low pressure spray, brush or roller.
Coverage 3-8 m2/Ltr depending on substrate type
Curing Time Touch dry 4-6 Hrs - 2nd coat may be applied after product is touch dry
Fully cure 48 Hrs
Equipment Care Clean with water immediately after use.
Pack Size 5 or 25 Ltrs drums, and 1000 Ltrs IBC
Storage Store in dry condictions at temperatures between + 5 & + 35 degree C
Shelf Life 12 months in original sealed container



On newly laid projects, Mona-Guard Block should be applied during pavement construction ensuring minimum preparation is required. On old paving, remove all dirt, debris, weed growth, oil and any other contaminants. This can be acheived by utilsing the listed Monaseal preparation products contained within this TDS.

In general, the surface must be sound, clean, dry, free from frost, laitance, weed growth, oil, grease and all dust, loose and friable materials must be completely removed from surfaces prior to application.

NOTE - Existing projects will need more aggressive cleaning in order to remove 20mm – 30mm of existing joint sand, a pressure washer is required. Mona-Guard Block cannot be applied to old jointing sand.

Monaseal’s recommended preparation products

  • Mould, fungi and organic growth present - Mona-Sterile - Sterilising solution
  • General grime on substrate - use Mona-Maintain
  • Oil / greese present - use Mona-sperse - Oil dispersant
  • Heavy staining agents on aged substrates - Use Mona-Bricone Clean - Brick & Stone cleaner
  • Cement, Grout and mortar spillages and staining - Use Mona-Mort Clean - Cement & mortar cleaner.

For use on application for all recommended substrate prepartation materials, please consult the TDS for each material.

Jointing Sand Application

  • It is recommended Mona-Guard Block should only be applied when a dry period is forecast for the next 8 hrs as a minimum for maximum performance.
  • Jointing sand used should conform to BS7533.
  • Jointing sand should be applied by brushing it into place with a soft broom.
  • Old paving Joints should be filled with a minimum of 20mm - 30mm of approved sand.
  • New paving joints should be filled to a depth of 100%
  • Always remove residual sand from chamfer or top of setts/blocks. Application of Mona-Guard Block will bond sand left on tops of setts/blocks, making removal at a later stage difficult.

*Please note - Monaseal products are guaranteed against defective materials and manufacture and are sold subject to its standard Conditions for the Supply of Goods and Services, copies of which may be obtained on request. Whilst Monaseal endeavours to ensure that any advice,recommendation, specification of information it may give is accurate and correct, it cannot, because it has no direct or continuous controlover where or how its products are applied, accept any liability either directly or indirectly arising from the use of its products, whether or not in accordance with any advice, specification, recommendation of information given by it.

Tags: Protection, 5L